..yeh, the idiot (Hubbard) did try to fib us that one about the brain being a 'lump' resulting from banging the head against things... But it can't be true, since we all know that neanderthal men, as well as the Piltdown*, hit their women on the head with a club.. (or the femur of somebody they had eaten) Whatever, the habit would clearly result in women having a much larger brain than males.. But males of the human species have larger brains than women.. So Dr.Hubbard's theory is hereby debunked!
*The Piltdown man has been exposed as a fraud in which the top of a gorilla scull was attached to a set of human jaws.. But realize that the remarkable Piltdown man, far from being a fraud, proves the advanced surgical skills of the Piltdown! - They knew that the brain was a useless lump, so they surgically replaced their sculls for cosmetic reasons.